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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd186d346f66a64f498c2aacc10c3d6279709017e16605481ce450e3f3a41514' 
  AND token = 'aeAirPegAS69J/MMib7nPO8yaTOkwbXiSs4Uwvf5rao=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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