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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '963445078f4d0b836d6da9b142dc7e06e1f85ae713d758a4b7b7d726f157859e' 
  AND token = 'yTvZMppLOu68o8NJkX1Ph/c1qboCi1d5KOlgVAg/NTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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