Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c385234fa12c59535330ec9c9458057f0351c5684ed89b065d15c83b05fa2584' 
  AND token = '9Hqo7r4ln98tw+1DFpL6OlZ+Qke5360LEYZHXM5aYmE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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