Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b09abe9bb518045c47f0870bff83b2e3b04349ff3f927a65a3658a3cb1fc5d0a' 
  AND token = 'PiWy0fNO98f7IjJXPyr89kgVKEYUrxw62KTuAHDEMbA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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