Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f86ff1c8fb69a1028ce54a3ff2b6035b8b09f5f2441548c4b2333c01e06a635' 
  AND token = 'FeOEYAl7tQeWhXSk2XsPOlNJNFNJeIJTZ71p5Vw1bpY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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