Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba262d280b433253fbe3173600d21d285af8582296917f106588287da2533016' 
  AND token = 'QqoUwDZaeHu8Hl7+ADN1ZJNP5dD75A4Qey0Tmxwr7OU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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