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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61bcad6e6f16c6567d42564a6a23b4d0544ea94480a053e4ac02c773ebbd0c73' 
  AND token = 'PFu/JL3HR8394YmbxhlB/COqlpGan6TK/il2hwXRdy4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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