Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '838f6cf0b7e7579053138d138c16a3b7ec0c145eea976d220682f3ee32e80b91' 
  AND token = 'Q0lE5QxPV4F9P80aZZY20TzdSMpZiqF1ywu1ImiO0fk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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