Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0745401c33e78f3e256997775f2a2269b9cf3e7ed9c599df1471ecc266a3f427' 
  AND token = 'XYnexTA7mGpsjL69M5skfhEyJrjW4KXOJwee0es2BpI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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