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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ee31d1e77f3512246097236d284675f7a9096a9a31f711826acf3e01e5bf91d7' 
  AND token = 'x8o3T7GrsZtBUE4DmPGOAl9Lxr6HxEbLWhrdt0v7nBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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