Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '219c19eac681f5a8e722a2730b672009866631edd543f54fd00e600115fcbc50' 
  AND token = 'VVUc8Sw4rQDcDDkoEWYFvjBBsscCYqkhItOGENac0/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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