Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f414a4e568c83dfb525d32294efc36eb8fb0490d7f0cd999b993a6572b8c05c8' 
  AND token = '/QpVgttLbDSduI/cGlaIHsuPvi90G+ltXRiqLz1vdPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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