Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd162e7c8e85ac3ad69189baf9e126b2c30c357903bee855e614387a8c6568349' 
  AND token = '5I+QeUtQI03n4S+5e9sHQN/WLH2J/JudUufRBDbU+3g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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