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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '111b080e4a83eed7439873f8ced877c2c4d33b8170a9a9624bb40c3df2a063bb' 
  AND token = 'oZUosgLcJTRGqNai0Fa513J5OOO0T6pvh6GgSAgdcp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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