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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cf51eda39f1a456d2a235669e27ea94cdc2b22e3b956d2215bc221543cbb7ea0' 
  AND token = 'hj4YsPUKjng85VUG/W13tMnph9spze6JwkeAAS6s8s8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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