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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80fb8b76b9f5217c6f8d9f6cecc923d0385a20ce6198bfe1f030efe827aa5869' 
  AND token = 'OwaJTl6SukGHMule4KC44H+BmghHVxyxV787rHufOdo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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