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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00bf4440e014f4a9ae4fda6e21aedc6b172c60e6d4e10a0f397c2f3839835d9e' 
  AND token = 'Jlr1GcNmH8cY8PvCrcaLimhtGcONU5fn9o3TuPchRok=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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