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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd7af38ca56b714e5e5100443e9dbe5cced8c70e75edd65aa8229dae549006f8d' 
  AND token = 'v3Jr/4NvhDUD09gC023jFdx07Eg0+NUiwuXioN8a7bU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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