Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14bf2d5f40c757dfcaecd6fdec84a134447d46cc627a93719dde16415c424731' 
  AND token = 'x3AL4pGUtwErztNS3GzpvY7yIb7/VCgA+gytfOXWJ1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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