Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f9f118fa1073f4d9108b54b5b5ee662dde2ba9555fabae71384e2f80f1763614' 
  AND token = 't04noXV+oc+DOkNMoTP3VvPecHFGyZLlLMfW7s9dYDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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