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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '98722d3f217878da60bc20f15a5057c9532ccca7aeef371d887a5cbd1f3561a6' 
  AND token = 'l2leabpDz1DRdNTkRdP6Ia6sLBX3i4bQyx2FhlxzDhw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00101

JSON explain

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