Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72cee58d9a4cdd6950f477913dcc7e275568205eb054595d4200463bde132b0e' 
  AND token = 'sJOgH2oFaUsPzPWdzLY2X8DA/2SkcrNpi7uo3i9YsVA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}