Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '266f180665cef9d537cc8720662955e4823c2bd9cefdd8e4dcdd968244f7c2c6' 
  AND token = '4qPqPuVLO1ea4BC+IfHB1fly5qwO0McMN7BVeedwOZs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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