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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1f9bb3bda39c5562576c26c73d01d0a256a6223de4e5480ab38c49bd141f5e79' 
  AND token = 'wmS9aJlQja2cyFTMHOdV3Eam5XYTNq9+VtiSa78y0vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00195

JSON explain

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