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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3c80e884dc048425f489212b4e5fe24efbafcbeec6a3e0feb1dd312c10d2070e' 
  AND token = 'P+8ll+Z7HkleprnpD9Cbif5yIohcrPZc+R5zLO4vXzg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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