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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '244b0fa26ab7677a90fbcb6374871a5a3a139f245588765e32490e15d7172161' 
  AND token = 'ws/qsO9dp9/yQZcBEZBa59B7harcuqZixLGkm/EkDaE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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