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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ec582c24acf0f350dcae8c34f018b9cf9de3b1299d95161e24934be665112419' 
  AND token = 'hQnoF0IElU7O/SAYDINVNEjzIf2lhisjoqrz3gys8HQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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