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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6e0df60c69587b20fbb80b6573179b1f2fe5fe87fb4b4ba4422d933ce67f1bb0' 
  AND token = 'hhr2ZBDxFlg22c3969GOQTH/526RlecSJeZuaRgzw5E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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