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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2b22b6e6c1834653ed0b91d61e2e59ed92f3c786728ab61c3d308011631fc0d5' 
  AND token = 'hO4i9NU7YeLugFwARulJDHY+/ATdP0lfJAi1J8biFTc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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