Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ecede745b44a62953f1f23e6beeed27048983c0ea22a1416f644a50673b8b7ea' 
  AND token = '+GrF51/LoqhIFNfjeSeRm8g/z8fdVZPCdCIfxplyUYM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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