Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5059ba39d1bbeb28e0eeba1dd969b167d1491a7c5b1ac8c2ea187a6aebcbaba9' 
  AND token = 'eKy8z60pW3nNHV1n9ALVzdlqbbZ36pA1bM9n5jaaCVk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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