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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9428f385c10b13295cb4bef4f21f2b09b24434c45ff5c36073f4a928b0e4f9f3' 
  AND token = 'jyPGV7zqGOxFTQ+eqx9py1svhhbGEC3lhHk3h51QSfc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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