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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f382f58e9b26d0164cac68edb7890cb91015d776419e90dda0c8d6af38c5923f' 
  AND token = 'hqbIKmc326bNRFvSK/KpcyTbHX/Wdb/aDT8e0Yx4VvI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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