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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '62789f8931c8861bf4e72649d858f0cf7485548b7608f19917065838e9bf19d3' 
  AND token = 'wc7iiAIhoLoMVV3H8mOpDhHefYpJdcP2D2NUj0b5HDw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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