SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'c3fe86f90831dee4c0d76c000877ba21d22d97bb592571ab832b3d23afaa7f6d' 
  AND token = 'r2V1Y/4lquEgSqgdyjgszK8DX8P+w1hou7HZh5ylASY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00153

JSON explain

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