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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9403865849c3f97f23d6f7d62176697e62728f35804189aa044aaf9976cef57' 
  AND token = 'shETnyhwLKf51EejpB3AjS4U0ccEcXNHHLFK/An++kM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00014

JSON explain

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