Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e408705a7d234e19adc62c3692d001ee9826f4e48cee6c83bd6921f3045acd6e' 
  AND token = 'hs5KC4HrtqKAitT2+FgXM2kziNPIqA1nwb8wIQ2pTAI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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