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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '133f46c7938f8a049848d7e497cf079f61b72583e8337e7e820dfcf34f670bff' 
  AND token = 'TY8RA1V7GkxLaClGiPf2fAEIuyVA4iP6h3/YCFlPaJ0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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