Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '647989ec78492a4467ae0d7ef78c46ad6cab2dc7a196aa63f70be49755efda73' 
  AND token = 'jbAbbe4VEVRwRNrxk2Sv7tO2xtcKaz1RHEXndGA0nCk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}