Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '23d14e858ffb8f78ce242c9d93957df884b5d5e6136f73d32a08d8aa4b7b5318' 
  AND token = '1dhv0Z2449b7zsI6cO5iZlkS1+4VoGL4Kj6Sah5+cCs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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