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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '569fd4c5333ae672e20e0a73bb2bebdc4c85099d565fbe6b1e6bbca1d568cced' 
  AND token = 'T2NP/rsg1RG7j8KJaI169PFrksu/iEoV4yxUUTaA6ls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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