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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cc76a8ee9e7e1ba0a0c7ecea79003f87e98073de5613d9c2dee4f310dc3c207f' 
  AND token = 'ZI5f1ivn94uLT2emlxUldOtVbMa7N9rtKkY5pYKJG58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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