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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5bdab925fd327ef1b1b9d5dfcb9b1e9a05043f11a508a0429de72c656b8de00e' 
  AND token = 'rleGFSx+TDwnqF+liPtchbAqxASFK5FSvopbHo7gD30=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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