Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f068aaceee49c61e4eaad11078f5b9689af28129fdcf460153d3c431b2778773' 
  AND token = 'zeQm6xm0NP11rhYmRKI8Lczjf+ti2NfUnbt4Ld5XnnI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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