Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6c4952b396c1ae7f2c4f4075b12709e2c474a0903edd6c0d459764e47c10d4a9' 
  AND token = '9CRoetVEqgRKjtrDSRqYsJ4QyZvQmJeTrrVDNalzpHA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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