Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f2158d3547becc5f69fcba7ed819a964846c382d5308bf20ef50762b7d461e55' 
  AND token = 'w3BV20zcIlYd6d7GvME1qeHoFDbn+jwEnUSOLdUfeow=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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