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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5d804f792de0777db6bafe72002f408a40b2a4a7297643a05c4a69692d065064' 
  AND token = 'q844l2aG/Ug2gf0u7mdCVgIGKrlDhvzzth7tTyrIpt4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

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