Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b1caf930291dfc6c8cc0a46fda055791a2de22e97beef27743e000a98a4957a1' 
  AND token = 'xLeSf8o4TTAdRewyNOgrNt46EXRbgPMgO5ZLP6YX8LE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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