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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '48bac6a8ba617b3afb9e80bc74ab6d371edc8ea35f212433216e4ec86af605de' 
  AND token = 'P/HdY3Hp4/f2uMXx2U3/CN++aF/eplhsP+XVtZ7j0jM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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