Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd140ceae38a383ecd6de6f39055af4755e8fe2e97c72eace1a1aac337bcde12d' 
  AND token = 'jF4cyGylQonWbtM1rCEL5sFYhOD8Een8UcNoEboSAWw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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