SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f9aad9480822bfb7ed22478138c45f5903fe6a9ac0741958dfdb3f94291cc3ed' 
  AND token = '5NWoi0dhYjMzEk4U+OOvR0rE7K96S4RSJgfuSOQ/1wg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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